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Yes sorry got my flow and return mixed up :( Thanks to all for confirmation that it will not make a difference to balancing the system.

Good Evening I am looking to balance my central heating system. I do not believe that it was balanced when the house was built as all the lockshield valves are all fully open ? I have also discovered that some of the TRVs had been fitted on the return side of the radiator, as opposed to the...

fair point :)

Hi It sort of looks like that might be the case, however I was thinking that the element would be very close to the plastic tube. Would it hurt to remove these all together ? I doubt that it would affect the operation of the towel rail as I understand that hot water rises regardless ?

Hi Yesterday I removed 2 in number chrome heated towel rails so that we could decorate the walls behind. One of these towel rails is about a 1m tall, the other about 1.6m tall. I noted that there was a plastic tube inside the leg of the shorter towel rail which looked as if it was supposed to...

Hi There is a 22mm automatic bypass valve in my central heating system which was installed, in effect, upside down i.e. the head containing the spring faces down towards the floor. The abv has actually failed as I not able to adjust it from the minimum setting and it therefore activates...

Morning I am going to be installing an EvoHome system and no longer need the 2 port valves as the actuator at each rad, as I understand it, will act just like a 2 port valve. I understand that I could just take the actuator heads off each of the valves, however would the shoe / paddle inside...

Hi I am looking to remove the 2 port valve ( Danfoss ) from my central heating system and need to re connect the 22mm copper pipe work either side thus closing the gap. From what I can see from the tech specs sheet for the 2 port valve, it has an overall length of 112.5mm. I have found a 22mm...

Hi I did a factory re-set and the system came back to life :) For now it all seems fine. Many thanks for all your help.

Hi it was a while ago when I switched the unit into the engineer mode, but I do remember being surprised at the time when the AC LED on the top right hand corner of the actual console (which houses the circuit card ) went off ? I can not get the system out of the engineer mode as the key pad...

Hi NN Is there any chance that the RKP was damaged when I reconnected with 4 wires to it - Data, Clk, 12V and 0V ? Cheers

Hi I checked the Data and Clk wiring inside the console - it does appear to be wired correctly to the RKP. As to the RKP address link there is only the one RKP which I understand has address 0 - in fact the jumper LK1 is only fitted to one of the pins which I understand means address 0. It is...

Hi Sparky Mark A Today I turned off the mains. There was no sound from the external bell suggesting that the battery had charged up or was okay ? With the mains off I checked for 12V with my multimeter and confirmed that there is 12V between aux 12v/0v and bell 12v/0v. I then removed fuse F2...

Many thanks - I will check the fuses and the 12V supply and get back to you. One other quick question - the system should still be in the Engineer Mode - when I shut off the mains power and disconnect the battery will the external sounder go off considering that it is currently strobing or as...

Evening SparkyMarkA Many thanks for the information. Can I check the 3 fuses in situ for continuity or do I need to remove each in turn ? Should I also be checking them in situ with the mains power on ? As to the 12V output can I check this at the key pad ( green 12V wire and white 0V wire )...

Hi Handymanjo if the aux fuse has gone would you expect there to be 12V at the key pad as the back lit LEDs on the key pad came on ? Cheers

Hi SparkyMark A I am sure that I got the wires to Data and Clk the right way round as I double checked before I applied the 12V supply. If I did have them back to front would I have caused any damage ?

Hi I was wondering if you could help me. I note from the forum that you have a great deal of experience with Scantronic 9448+ Alarm Systems. My system has been in Engineers Mode for several weeks during re-decoration with no issues. All the PIRs are removed ( all 12V feeds were isolated and...

Good Evening I was wondering if anyone could help ? I have a Scantronic 9448+ unit with a Scantronic 9427 Key Pad. I placed the system in the Engineer Mode which allowed me to remove the PIRs and the Key Pad so that I could re-decorate. The system has been this way for a couple of weeks...

Hi I am in the process of fitting new TRVs to my radiators. I removed the old radiator tails and was surprised how much force it took to remove some of them even when using the correct sized spanner. I am planning to install the new radiator tails using Loctite 55. I understand that the...